1. 3GPP (2004). Recognition performance evaluations of codecs for speech enabled services (SES) (3GPP TR 26.943).
2. Bocchieri, E. (2008). In Automatic speech recognition on mobile devices and over communication networks (advances in pattern recognition), Fixed-point arithmetic (pp. 255–274). Berlin: Springer.
3. ETSI (2002). Distributed speech recognition; advanced front-end feature extraction algorithm; compression algorithm (ETSI Standard ES 202 050).
4. Fingscheidt, T., & Vary, P. (2001). Softbit speech decoding: A new approach to error concealment. IEEE Transactions on Speech and Audio Processing, 9(3), 240–251.
5. Gartner (2009). Gartner says worldwide smartphone sales reached its lowest growth rate with 3.7 per cent increase in fourth quarter of 2008. Press release.